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Does ffmpeg audio effects like reverb? Can I work with the channels (to detain them, mix)? If so please link to code samples or examples of codes. thanks in advance!
You can use "RUBBERBAND" for changing pitch and tempo of audio,
If you want to change/add effect of audio from video file then use following code with combination of ffmpeg and rubberband
ffmpeg -i w.mpg -vcodec copy -an tmpVideo.mpg
ffmpeg -i w.mpg tmpAudio.wav
rubberband -p 6 tmpAudio.wav tmpAudioRB.wav
ffmpeg -i tmpVideo.mpg -i tmpAudioRB.wav -vcodec copy finalVideow_6.mpg
This will generate a new video file with pitch change in audio
You're looking for SoX, which is like ffmpeg for audio.
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i need to watermark a video file.
i have FF-MPEG Linux server and ff-mpeg is installed by default
plz reply me the command of watermarking for below details
1. The source file is Input.mp4
2. the Target file is Output.mp4
3. the watermark file Watermark.png
please send me the Linux commands.
is there anyone know, please reply soon
According to this site it should be something like:
ffmpeg -i Input.mp4 -i Watermark.png -filter_complex "overlay=10:10" Output.mp4
10:10 are the coordinates from the top and from the right for the overlay. (In this example 10 pixels from the top and 10 pixels from the right)
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I have the MP3 audio file output.mp3 with 00:00:01 length.
I want to convert the audio file to output_test.mp3 with 00:00:50 length.
The audio file should be play repeat at end of length 00:00:50. How to do it?
$imgDir = 'upload/2016/01/tmp_81332';
$ffmpeg = '/usr/bin/ffmpeg';
// Convert Audio Length Path
$convAudioPath = $imgDir."/output.mp3";
$convAudioPath_test = $imgDir."/output_test.mp3";
exec("$ffmpeg -i $convAudioPath -vcodec copy -acodec copy -ss 00:00:00.000 -t 00:00:50.000 $convAudioPath_test");
Advise any idea!
Use
exec("$ffmpeg -stream_loop -1 -i $convAudioPath -vcodec copy -ss 00:00:00.000 -t 00:00:50.000 $convAudioPath_test");
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Is there a video making tool on linux that has an api which I can use to combine pictures and music into a video?
I just found youtube editor. I can add multiple pictures and make a video. Unfortunately it doesn't have an api. Is there anything similar?
Create a video slideshow from images
# each image will have a duration of 5 seconds
ffmpeg -f image2 -r 1/5 -i img%03d.png -i music.m4a -r 30 out.mp4
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I know there are various linux packages that allow you to crop a portion of a song. For example to crop a 30 second portion of a 2 minute song mysong.mp3 starting at the 1 minute mark
ffmpeg -ss 60 -t 30 -acodec copy -i mysong.mp3 30secondportion.mp3
How can I create a new .mp3 where the first 60 seconds of this song have no sound, the following 30 seconds have sound, and the last 30 seconds have no sound?
The resulting .mp3 should be 2 minutes in length.
I'm using ubuntu 10.04
Take a look at this tutorial:
Using Sox to Extract Subparts of a File
Using Sox to Create Silence
Using Sox to Concatenate Files
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I am converting the MP4 video file $output from some images and one audio file.
But now I want to convert the same MP4 video file without audio.
How to do it?
Here is my sample code:
// Convert Video from audio and images
exec("$ffmpeg -framerate 1/5 -i $convImgPath -i $convAudioPath -c:v libx264 -c:a aac -strict experimental -b:a 16k -shortest $output");
Please update my code where I am change.
Disable audio via -an i.e.
exec("$ffmpeg -framerate 1/5 -i $convImgPath -i $convAudioPath -c:v libx264 -an -shortest $output");